Quality of hydro-alcoholic products used in Senegal: pilot study

Antisepsis and disinfection have always played an important role in the fight against infectious diseases. The use of these products has been effective in breaking the chain of transmission of microorganisms. Today, with the advent of COVID-19, the main recommendations are, among other things, physical distance and the use of antiseptic products, including hydro-alcoholic products. In Senegal, with poor regulations on the acquisition and distribution of antiseptics and disinfectants, this situation has led to a proliferation of antiseptics and disinfectants on the national market. this work aimed to study the quality of hydroalcoholic products found in the trade. We evaluated ten samples of hydro-alcohol products collected during the month of March 2020. Physical and microbiological controls were performed at the National Drug Control Laboratory. The alcohol content of the samples ranged from 63 to 85% and were consistent with WHO recommendations except for samples E3 and E5. The pH values varied between 4.02 and 6.64 and the densities of the hydro-alcoholic gel samples ranged from 0.84 to 0.92 g/cm3; E2, E4, E5, E6 samples had densities greater than 0.89 g/cm3. The samples of hydro-alcoholic products all conformed to the sterility test and no microbiological contamination was observed. Antimicrobial activities of the hydro-alcoholic samples tested ranged from 58.3 to 100% with two samples showing no activity (E2 and E5). In view of the results of this study, it would be relevant to expand and deepen investigations by a significant increase in the number of samples and by carrying out as complete an analysis as possible.

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Effect of Ferulic Acid-Grafted-Chitosan Coating on the Quality of Pork during Refrigerated Storage

Foods ◽

10.3390/foods10061374 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1374

Author(s):

Guotian Wang ◽

Yunpeng Liu ◽

Huimin Yong ◽

Shuai Zong ◽

Changhai Jin ◽

...

Keyword(s):

Ferulic Acid ◽

Coupling Reaction ◽

Thiobarbituric Acid ◽

Antimicrobial Activities ◽

Edible Coating ◽

Thiobarbituric Acid Reactive Substances ◽

Ph Values ◽

Basic Nitrogen ◽

Antioxidant And Antimicrobial Activities

Pork is perishable due to oxidation and microbial spoilage. Edible coating based on biopolymers and phenolic compounds is an effective way to preserve the quality of pork. In this study, ferulic acid-grafted-CS (ferulic acid-g-CS) with strong antioxidant and antimicrobial activities was synthesized through a carbodiimide-mediated coupling reaction. The obtained ferulic acid-g-CS was used as an edible coating material for fresh pork. The effect of ferulic acid-g-CS coating on the quality of pork during storage was investigated at 4 °C for 8 days. As compared to the uncoated pork, pork coated with CS and ferulic acid-g-CS showed lower total viable counts, total volatile basic nitrogen values, pH values, thiobarbituric acid reactive substances, and drip losses. Besides, pork coated with CS and ferulic acid-g-CS presented more compact microstructures than the uncoated pork at the eighth day. Sensory evaluation assay showed pork coated with CS and ferulic acid-g-CS had better color, odor, and over acceptance in comparison with the uncoated pork. Ferulic acid-g-CS coating, due to its relatively higher antioxidant and antimicrobial activities compared to CS coating, had a better performance in refrigerated pork preservation. Ferulic acid-g-CS coating effectively extended the shelf life of refrigerated pork to 7 days. This study revealed ferulic acid-g-CS coating was a promising technology for refrigerated pork preservation.

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MUTU IKAN KUWE (Gnathanodon speciosus) SEGAR YANG DIBERI PERLAKUAN CAIRAN NIRA AREN (Arenga pinnata) HASIL FERMENTASI SELAMA PENYIMPANAN

INASUA: Jurnal Teknologi Hasil Perikanan ◽

10.30598/jinasua.2021.1.1.1 ◽

2021 ◽

Vol 1 (1) ◽

pp. 1-11

Author(s):

Martha L. Wattimena ◽

Dwigth Soukotta ◽

Max R Wenno ◽

Yudi Mantol

Keyword(s):

Analysis Of Variance ◽

Food Processing ◽

Storage Time ◽

Ph Value ◽

Antimicrobial Activities ◽

Friedman Test ◽

Fresh Fish ◽

Ph Values

The application of acids in food processing has an important role due to its antimicrobial activities. Likewise, acid derivation of palm nera has been widely used by the community in handling fish to maintain its freshness, however the research concerning its effect on fish has not been conducted yet. This study aims to analyze the application of palm nera (Arenga pinnata) in maintaining the quality of fresh Gnathanodon speciosus during storage. The results of the analysis of variance showed that the treatment of fermented palm nera (A) had a significant effect on the TMA value, and had a very significant effect on the pH value, while the treatment of storage time (B) had a very significant effect on the TMA and pH values. The interaction of treatment A and B has a very significant effect on the pH value. The results of the Friedman test showed that the interaction of treatment A and B had a very significant effect on the odor, texture and appearance of fresh fish. The conclusion is the fresh fish treated by fermented palm nera and stored during 9 days obtained the best quality based on objective (TPC, TMA, pH) and subjective parameters.

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Prospects of using Lachancea thermotolerans yeast in winemaking

E3S Web of Conferences ◽

10.1051/e3sconf/202124701012 ◽

2021 ◽

Vol 247 ◽

pp. 01012

Author(s):

Irina Peskova ◽

Tatiana Tanashchuk ◽

Elena Ostroukhova ◽

Evgenij Slastya ◽

Svetlana Levchenko ◽

...

Keyword(s):

Acetic Acid ◽

Global Warming ◽

Cabernet Sauvignon ◽

Glycerol Concentration ◽

Alcohol Content ◽

Wine Production ◽

Grape Cultivar ◽

Ph Values ◽

Lachancea Thermotolerans

In connection with global warming, study to find new technological solutions that allow to obtain wines characterized by a lower ethanol content and balanced in the acids and sugars content is relevant.One of the solutions is to use Lachancea thermotolerans yeast, which can metabolize some of the hexoses into the lactic acid. In the present work the comparative studies of the chemical composition of wines from grape cultivar Cabernet Sauvignon and Crimean autochthonous cultivars Kefesia and Ekim kara, obtained using Saccharomyces and Lachancea thermotolerans yeasts, were investigated. Analytical studies were performed using HPLC. Experimental wines obtained using L. thermotolerans showed a decrease in ethyl alcohol content by 5-11% and pH values by 0.10-0.32 unit sand an increase in the concentration of titratable acids an average 1.3-fold and glycerol concentration by 30% compared to the control obtained at S. cerevisiae. In wines obtained using L. thermotolerans, the acetic acid content did not exceed 0.01 gL-1. The investigated wines were distinguished by their balanced and velvety taste. The results achieved indicate that the use of L. thermotolerans yeast is promising for improving the quality of the wine production, including those with organic status.

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Microbiological quality of drinking rainwater in the inland region of Pajeú, Pernambuco, Northeast Brazil

Revista do Instituto de Medicina Tropical de São Paulo ◽

10.1590/s0036-46652011000300001 ◽

2011 ◽

Vol 53 (3) ◽

pp. 121-124 ◽

Cited By ~ 9

Author(s):

Rogério Pereira Xavier ◽

Leonardo Pereira Siqueira ◽

Fernando Antonio Chaves Vital ◽

Francisca Janaina Soares Rocha ◽

João Inácio Irmão ◽

...

Keyword(s):

Rural Communities ◽

Microbiological Quality ◽

The Other ◽

Human Consumption ◽

Northeast Brazil ◽

Microbiological Contamination ◽

Animal Life ◽

Two Samples ◽

Sanitary Conditions

Despite all efforts to store and reduce its consumption, water is becoming less inexhaustible and its quality is falling faster. Considering that water is essential to animal life, it is necessary to adopt measures to ensure its sanitary conditions in order to be fit for consumption. The aim of this study was to analyze the microbiological quality of drinking rainwater used by rural communities of Tuparetama, a small town located in Northeast Brazil. The study covered seven rural communities, totaling 66 households. In each household two samples were collected, one from a tank and the other from a clay pot located inside the home, resulting in 132 samples (tank plus clay pot). Approximately 90% of samples were below the standard recommended by the current legislation, being considered unfit for human consumption. Part of this high microbiological contamination of drinking rainwater could be related to the lack of sanitary education and of an adequate sewerage sanitation system.

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